In the Beta stage of Minecraft, slimes could spawn in peaceful difficulty, but they would still attack players.

Slimes previously had sound effects that did not sound as 'squishy'.

Slimes are the only mobs that attack every half-second, as opposed to every second.

However, the jump height is inverted between them, as Slimes will always jump one block high while Magma Cubes' jump height is determined by their size.

Slime jump distance is determined by its size, while any size of magma cubes can only jump one block forward.

They had black eyes and mouth, instead of transparent green.

The formula to determine a slime HP could be: +1)^2], command size being the number input of the size when using '/summon'.

The smallest slime, however, always has 1 HP and doesn't harm the player.

A slime's health in HP is the size of their square their edge length in meters, half of their size and their attack strength is the size.

Smaller slimes can climb ladders despite them not having any limbs.

Before update 1.8, smaller slimes could not swim.

As of update 1.5, a slime's spawn rate is determined by the phase of the Moon.

Before update 1.4.2, slimes could spawn in any biome.

Slimes of sizes small and tiny can climb ladders. However, a slime can despawn if it is not given a name tag. All sizes of slimes are hostile. Even tiny slimes technically are too small, though they have zero attack damage and are sometimes kept as pets, because they will follow a player around, and do not require taming.

Slimes can only be found in swamps, below layer 40 (in 1⁄ 10 of all chunks), or superflat worlds. A slime will split into two smaller slimes when killed unless the slime is already the smallest size.

A slime is a rare hostile mob, which can spawn in three different sizes: big, small, or tiny.

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